USPTO Patents Application 10581019

PATENT COOPERATION TREATY

PCT

INTERNATIONAL SEARCH REPORT
(PCT Article 18 and Rules 43 and 44)

Applicant's or agent's file reference
44802-0516

FOR FURTHER see Form PCT/ISA/220

ACTION as we ^ as * w ^ ere applicable, * tem 5 below.

International application No.
PCT/US05/02457

International filing date {day /month/year) (Earliest) Priority Date (day/month/year) j
26 January 2005 (26.01.2005) 30 January 2004 (30.01.2004)

Applicant

MATSHUSITA ELECTRIC INDUSTRIAL CO., LTD

This international search report has been prepared by this International Searching Authority and is transmitted to the
applicant according to Article 18. A copy is being transmitted to the International Bureau.

This international search report consists of a total of ^j** sheets.

2^ It is also accompanied by a copy of each prior art document cited in this report.

1. Basis of the Report

a. With regard to the language, the international search was carried out on the basis of the international application in the
language in which it was filed, unless otherwise indicated under this item.

| j The international search was carried out on the basis of a translation of the international application

furnished to this Authority (Rule 23 . 1 (b)).

With regard to any nucleotide and/or amino acid sequence disclosed in the international application, see Box No.

L

2.

3.
4.

Certain claims were found unsearchable (See Box No. II)

Unity of invention is lacking (See Box No. Ill)
With regard to the title,

the text is approved as submitted by the applicant,
the text has been established by this Authority to read as follows:

Please See Continuation Sheet

IE

With regard to the abstract,

the text is approved as submitted by the applicant.

the text has been established, according to Rule 38.2(b), by this Authority as it appears in Box No. IV. The
applicant may, within one month from the date of mailing of this international search report, submit comments

to this Authority.

With regard to the drawings,

a. the figure of the drawings to be published with the abstract is Figure No. 16B

as suggested by the applicant.

as selected by this Authority, because the applicant failed to suggest a figure,
as selected by this Authority, because this figure better characterizes the invention.

Form PCT/ISA/210 (first sheet) (January 2004)

INTERNATIONAL SEARCH REPORT

International application No.

PCT/US05/02457

Box IV TEXT OF THE ABSTRACT (Continuation of Item 5 of the first sheet)

The technical features mentioned in the abstract do not include a reference sign between parentheses (PCT Rule 8.1(d)).
NEW ABSTRACT

The picture decoding method according to the present invention is a decoding method for decoding coded pictures by inverse
quantization (IQ1) and inverse orthogonal transformation, in which a quantization matrix which defines a scaling ratio of a
quantization step for each component is multiplied by a miltiplier (IQH), which is a coefficient for frequency transformation or a
quantization step, and also, a result of the multiplication is multiplied by a quantized value, as a process of inverse quantization.

Form PCT/ISA/210 (continuation of first sheet(3)) (January 2004)

INTERNATIONAL SEARCH REPORT

International application No.
PCT/US05/02457

A. CLASSIFICATION OF SUBJECT MATTER
n>C(7) H04N 7/12

US CL 375/240.25
According to International Patent Classification (IPC) or to both national cla ssification and IPC

B . FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols)
U.S. : 375/240.25, 375.03, 375.2; 382/250, 251 t 253

Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched

Electronic data base consulted during the international search (name of data base and, where practicable, search terms used)

C. DOCUMENTS CONSIDERED TO BE RELEVANT

NTS CONSIDERED TO RfcLfcVAM 1

Citation of document, wit h indication, where appropriate, of the relevant passages
s 6R1 n*5? R? fT TTNA et ah 20 Jarmarv 2004 f"20.01 .2004). figure 7, col. 4, lines 4

Category

Relevant to claim No.

X
A
A

US 6,681,052 B2 (LUNA et al) 20 January 2004 (20.01.2004), figure 7, col. 4, lines 47-
53, 60-65, col. 5, lines 1-18, col. 7, lines 10-40.

US 6,097,846 A (ABE) 01 August 2000 (01.08.2000), fig. 2, abstract.

US 6,111,989 A (CHANG et al) 29 August 2000 (29.08.2000), figure 6, abstract.

1-15
1, 6, 11-15
1, 6, 11-15

□

Further documents are listed in the continuation of Box C.

□

See patent family annex.

♦ Special categories of cited documents:

"A" document defining the general state of the art which is not considered to be
of particular relevance

"E" earlier application or patent published on or after the international filing date

"L" document which may throw doubts on priority claim(s) or which is cited to
establish the publication date of another citation or other special reason (as
specified)

"O" document referring to an oral disclosure, use, exhibition or other means

"P" document published prior to the international filing date but later than die
priority date claimed

-X'

'&'

later document published after die international filing date or priority
date and not in conflict with die application but cited to understand the
principle or theory underlying the invention

document of particular relevance; the claimed invention cannot be
considered novel or cannot be considered to involve an inventive step
when the document is taken alone

document of particular relevance; the claimed invention cannot be
considered to involve an inventive step when the document is
combined with one or more other such documents, such combination
being obvious to a person skilled in the an

document member of the same patent family

Date of the actual completion of the international search
13 May 2005 (13.05.2005)

Date of mailing of the international search report

07 jun mm

Name and mailing address of the ISA/US
Mail Stop PCT, Attn: ISA/US
Commissioner for Patents
P.O. Box 1450
I Alexandria, Virginia 22313-1450

Facsimile No. (703) 305-3230

Authorized officer
Nhon T. Diep >
Telephone No. /703h

Form PCT/1SA/210 (second sheet) (January 2004)

INTERNATIONAL SEARCH REPORT

International application No.
PCT/US05/02457

Continuation of Item 4 of the first sheet:
The title is too long.
New Title:

Picture coding and decoding method, apparatus and program thereof.

Form PCT iSA/210 (extra sheet) (January 2004)